{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ee7fb1d59b3ace20287d3cf40dbafdf1222ff88a4d201bd5bb83a9489f59a7f",
    "signature": "0x8790ec3ba51259056e2945b0464a7fcb3039ff45dc90ee2d3f44782feda7c46e2897cf872e62bd946fda635ceb623a2081e26e28c77b3d34fd66642fa9dd69d91c",
    "signer": "0x930d6F9Ac58B5a72c3c68840A9dE44Ecc8B58a83",
    "userId": "756614075"
  }
}